Saw guard



H. J. KLEHM May 14, 1929.

SAW GUARD Filed Feb. 14, 1927 lil ii (l tmatented May 14, 1929.

HENRY LT. KLEHM, OF SOUTH MILWAUKEE, WISCONSIN.

SAW GUARD.

Application filed February 14, 1927. Serial No. 168,04?.

' This invention relates to improvements in saw guards.

l s. one of the objects ot the present inn to provide a saw guardivhichmay vy attached to an ordinary circular protecting the user againstaccidental injury.

n. thirther object oi the invention is to provide a saw guard in whichthe sauT is only exposed 'tor use when material to be cut is placed inposition beneath the guard, `and the guard only exposes a portion oitthe saw sullicient to accommodate the thickness of the nioterialengaged.

.tt :tur-ther object oit the invention is to provide a saw =guard in.which the guard 1nernbei' nieves in a plane parallel to the plane oi"the saw table.

nl. ifurther object ot the invention is to proride a saw guard havingnieans for hold ing the nnrterial up to the saw and prevent retrogradeinovenient of the material.

it. 'other object of the invention is to prende a saw guard which is etsimple cmstruction, is strong und durable and is well adapted tor thepurpose described.

lilith the above and other objects in View the invention consists et theimproved savv guard and its parts and combinations as set ilorth in theclaims and all equivalents there* ln the accompanying drawing in Whichthe saine re'lerrnce clmracters indicate the saine parts in all et theviews:

ltg. l a sectional view of a portion el a circular saw provided With theimproved saw guards; the view also indicating by dotted lines a board inposition. to be engaged by the guard; and

lllig. E?, a transverse sectional view there et taken on line 2-2 oitFig. 1.

lleierring to the drawing the numeral 5 indi :ates the table and 6 thesaw which is mounted on the shaft 7 ot a circular saw Inachine. lheshaitt is positioned below the table and the saw (i projects upwardlythrough a slot 8 in the ordinary manner to pei-init ina,=;erial 9 to becut to rest on top et the table and be moved inte engagement with thesaw. The improved guard coinn a vertically extending I-beain 1nember orplate 10 adapted to be adjustably connected to a depending or othersupport 11 by a bolt 19: extending through a slot 10 and thumb nut 13. Apart circular guard eas ing 1st is oi. a sutlieient size to enclose theportion et the suiv which projects through the table and its lower edge`will rest upon the tablewhen in its lowerniost `po.` ion asclearlyshoivn in Fig. l. i The saw easing is connected to the oppositeside edges ot the attaching plate 10 by pairs oit upper and loiver links15 and 1.6 which are positioned with relationto the casing and the platein para]le.loin1n` formation. The said links are pivotally connected tothe asing and the plate by bolts 17 and the plate positioned. v

in a plane in trent et the cutting edge of the savv With the linksextending rearwardly therefrom so that the Weight oit the parts willnormally hold the casing bearing upon the table or a slight distanceabove the inaterial being cut. Stops 18 mounted on the opposite sides ofthe casing are positioned to engage the upper edges oi. the lower links1G to liinit the downward movement ot the easing. The forward lower edgeportion of the casing is beveled as indicated by the nuineral 14; sothat the material to be cut Will easily pass thereunder.

A material engaging dog or lneinher 19 is pivotally connected at itsupper end to the lower end ot the plate 1() and depends dovvn- Wardlytherefrom at a rearward angle to engage the material to be out. AU-shaped connecting member Q0 is pivotally connected to the rear sideoli the dog 19 and to the inner sides oit the upper links 15 so thatwhen the dog is pushed rearwardly and upwardly by the material to be cutthe said movement :moves the links and the guard casing upwardly topermit the material to pass heneath the casing. The connecting member 20is so connected to the dog and the link 15 that the casing will beraised a slight distance greater than the thickness ot the niaterialbeing cut in order not to bear upon said material and thus eliminatefriction. rlhe lovver end ot the dog beveled to forni a sharp edge 15)which engages the upper surtace ot the material t) boing cut and prevents retrogrzule inoveinent oit said material and holds said materialup to the saW for cutting.

From the toregoing description. it will be seen that the saw guard isoit very simple construction and covers the saw in a manner to eliminateaccidents.

What l claim as my invention is:

1. The combination with a table having a circular saw extendingtherethrough, of a guard ther-eter, comprising a support, a

ltending over the saw,

.guard therefor, comprisingv a.

plate member connected thereto, a casing exlinks connected to the upperand lower portions of the casing and to the plate member inparallelogram formation, a lever dog pivotedrto the vplate memberandhaving a connection with one ofthe links and moved by the material beingcut for elevating the casing a sulicient distance above'the table' topermit the material to pass therebetween, said lever dog being free fromconnection with the easing.

`2.v The combination with a table having a circular saw extending'therethrough, of a support, a platemember connected thereto, a casingextending over the saw, pairs of upper and lower links connected to thecasing and to the plate member in parallelogram formation, ak lever doghaving aplink connection with some of the links and pivoted to the platemember 1 and depending rearwardly downwardly therefrom for moving thecasing upwardly, said lever dog having a sharp lower edge portion whichserves to prevent retrograde movement of the material being eut.

3. A saw guard, comprising a plate member having means for connectionwith a support, a saw casing to the rear of said plate member, a pair oflinks pivotally connected to the upper portion of the casing and theplate member, a pair of links connected to the lower portion of thecasing and the plate member, a lever dog pivotally connected to theplate member and dependin downwardly and rearwardly therefrom and freefrom connection with the saw and a connecting member nected to a medialportion o and to the upper pair of links.

In testimony whereof, I affix my signature.

casing, tplvotally eonthe lever dog HENRY J. KLEHM.

